I like the sentiment of "I'm 41 and I don't want to work". Do you think you're the only one?

I think the run-of-the-mill English schools don't keep you too busy. The pay isn't amazing, but if you just want to work in Japan I think it'd work fine for you. Check out Aeon, they claim a 36-hour work week.

Unlike 95% of the other people on this site who say "I want to work in Japan, HELP ME!" you actually have a degree which is the first (and pretty much only) requirement for this type of job.